Walkera furious 320 GPS

Hi, My drone walkera furious 320 GPS have moved the parameters and I can not put it on! The drone turns on and funtion but it seems that it does not go to the right or to the left the rear LEDs do not light up anymore! How can I fix it? With flyconfig it does not let me re-install the firmware because it tells me parameters error! What can I do? Thank you.